Filtering means for lubricating systems



Fill 17', 1923. v 1,462,175

E. "E. HANS FILTERING MEANS FOR LUBRICATING SYSTEMS Filed April 19 -192 0 2 Sheets-Sheet 1' Patented July 17, 1923.

UNITED STATES EDMUND E. HANS, OF KALAMAZOO, MICHIGAN.

\ FILTERING MEANS FOR LUBRICA'IING SYSTEMS.

Application filed April 19, who. Serial m. 875,034.

To all whom it may concern:

Ill

Be it known that I, EDMUND E. HANS, a citizen of the United States, residing at city and county of Kalamazoo, State of Michigan, have invented certain new and useful Improvements in FilteringMeans for Lubricating Systems, of which the following is a specification. Y

This invention relates to improvements in filtering means for lubricating systems.

The main objects of this invention are,

First, to provide an improved filtering and purifying means for lubricating systems which effectively removes foreign matter from the lubricant and prevents its passage to the parts lubricated.

Second, to provide an improved filtering means for lubricating systems well adapted for embodiment in an internal combustion engine such as those used on automobiles and farm tractors.

Third, to provide an improved filtering means for lubricating systems having the above advantages which is comparatively simple in structure and easily installed or embodied in internal combustion engines of common construction.

Further objects and objects relating to details of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming part of this specification, in which:

Fig. I is a detail view, partially in vertical section, of an internal combustion engine structure embodying the features of my in- .vention.

Fig. II is an enlarged detail section, partially in vertical section, through the pump and sump, the piping being in broken sections, on line 2-2 of Fig. III.

Fig. III is a detail sectional view on line 3-3 of Fig. II, showing details of the lubricating pump connection.

Fig. IV is an enlarged vertical detail sectional .view through the filter, taken on irregular line 4-4 of Fig. VI, the supply and delivery ipes being shown in full line.

Fig. is a similar detail sectional view A line 6-6 of Figs. I,

through the filter, taken on irregular line 5-5 of Fig. IV.

Fig. VI is a detail transverse horizontal sectional view throu h the filter, taken on and V. Fig. VII is an enlarged detail inverted plan view of the oil delivery head 33.

In the drawing, similar reference numerals refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

ferring to the drawing, I have illustrated various parts in conventional form, as the structural details form no part of this invention. I have shown my improvements embodied in an internal combustion engine, only such portions thereof being shown as I deem necessary to illustrate an adaptation of my improvements.

The crank shaft 1 is supported by bearings 2, 2, and 3 and has pitman rods 4! con nected thereto in the usual or desired manner, the shaft illustrated being a four-throw shaft. Lubricant is conducted to the bearings 2, 2 and 3 by means of the pipe 5 connected to the discharge 6 of the force feed ump, designated generally by the numeral having an outer casing 7'.

In the embodiment shown in Fig. I the crank has a longitudinal lubricant passage 8 therein providing conduits leading from the bearings 2 and 3 to the pitman bearings 9.

The crank case 10 is adapted as a lubricant reservoir and to receive the lubricant escaping from the bearings lubricated. The crank case is provided with a sump or well 11, being preferably a transverse depression across the bottom thereof. This sump need not be sharply defined from the bottom so long as there is a depression to collect the solid matter and accumulations. The inlet pipe 12 of the force feed pump 7, preferably of gear type, is connected to the discharge of the filter, designated generally by the numeral 13 I provide a filter pump 14%, the intake pipe 15 of which is connected to the bottom of the sump 11 while its discharge pipe 17 is connected to the inlet chamber of the filter. The pum s shown are gear force pumps, referab y mounted on a common drive shall; 18. A screen 16 is in the oil chamber or casing and surrounds the said pump 7.

My improved filter comprises a barrel-like casin 19 having a removable top 20 and remove is bottom 21. Within the casing vertical partitions 22 and 23 form .inlet settling chamber 24, filtering chamber 25 and discharge settling chamber 26. r

The filtering chamber 25 is provided with a filtering material 27, such as hair, retained in a suitable ba 27 and forced down to place by the perforated follow weight 27", the bottom end of the bag resting upon the outlet head 30, this being a cap perforated on its under side at 32. The inlet settling chamber 24 is connected to the filtering chamber by means of the opening 28 in the wall 22 at the top, and the filtering chamber is connected to the outlet or discharge chamber 26 by means of the passage 29 in the bottom 21 and the outlet pipe 30. The pipe 31 connects from the passage 29 and extends from the bottom well up toward the top of the discharge settling chamber 31.

The'pipe 17 projects into the inlet chamber about half way to the bottom thereof and is provided with a discharge head 33.

The discharge head 33 is perforated near the periphery on the under side so that it acts as a baffle to the flow of. oil downwardly, delivering the same centrally within the internal chamber so that the lubricant is delivered thereto in a manner to minimize agitation and allow for a settling of the sediment.

The discharge pipe 12 has a screened inlet 34. Not all lubricant conducted to the bearing is passed through the filter which, owing to its construction, removes the greater portion of the foreign matter or sediment.

In use lubricant is taken from the sump 11, where all heavy impurities at once collect, and is delivered by the gear force pump 14 through the pipe 17 into the intake settling chamber 24 of the filter. The oil is projected downwardly through the series of perforations and then flows gradually up to the to of the chamber, this movement greatl acilitating the settling of heavy partic es. The oil then passes through the notch 28 into the filtering chamber where it is forced gradually down through the curled hair or equivalent straining material, and descends gently and slowly to the bottom of that chamber, where additional sediment may collect at the bottom, and the strained oil then passes out through the perforated cap 32 throu h the pipe 30 and the passage 29 up into t e discharge settling chamber through the pipe 31, and is delivered radially and downwardly through the perforations of the cap 31' therefor. This permits the final settling of the oil in the discharge settling chamber and the purified oil passes out through the screen 34 through the pipe 12 into the oil reservoir, preferably in proximity to the feed pump for the lubricator,

settling of oil in the reservoir into the sump.

I provide a pet cook 35 in the top plate 20 of the filter over the filter chamber for the discharge of any light oil or gasoline that' may accumulate at the top, and also to empty the structure ofany air at starting should any air be Within the filter. It is highly important that the oil be supplied to the filter under pressure, and I have therefore provided a force pump and maintain the pressure at about 35 pounds to the square inch.

I have described my structure in a preferred form, which I desire to claim specifically on account ofits special virtues, and at the same time I desire to claim the invention broadly, all as pointed out in the appended claims.

This application is a continuation in part of my application for patent Serial No. 340,824, filed November 26, 1919.

Having thus described my invention, What I claim as new and desire to secure by letters Patent is:

1. In a lubricating system for internal combustion engines, the combination with the parts lubricated, of a crank case constituting an oil reservoir receiving the lubricant escaping from such parts lubricated and having a sump, a filter, a filter pump connected to the said sump and delivering to the said filter, a circulating pump for said lubricating system located in roximity to the filtering pump and supp ied directly from the oil reservoir, a discharge pipe from the filter delivering directly to said circulating pump, and a screen between the said oil reservoir and, said circulating pump coacting for the purpose specified.

2. In a lubricating system for internal combustion engines, the combination with the parts lubricated, of a crank case constituting an oil reservoir receiving the lubricant escaping from such parts lubricated and having a sump, a filter, a filter pump connected to the said sump and delivering to the said filter, a circulating pump for said lubricating system located in proximity to the filtering pump and supplied directly from the oil reservoir, and a discharge pipe from the filter delivering directly to said circulating pump, co-acting for the purpose specified.

3. In a lubricator system for internal combustion engines, the combination of a crank shaft with bearings, suitable oil passages therethrou h for lubricating the said bearings, a circu ating pump supplied from the oil reservoir and connected to deliver the oil tothe said bearings, a sump in the reservoir, a filter, a filter pump connected to draw from the said sump and deliver to the said filter, a discharge pipe from the said filter delivering in proximity to the circulating pump, and a screen surrounding the said punp, all of said elements coacting as specifie 4. In a lubricator system for internal combustion engines, the combination of a crank shaft with bearings, suitable oil passages therethrou h for lubricatin the said bearings, a circu ating pump supp ied from the oil reservoir and connected to deliver the oil to the said bearings, -a sump in the reservoir, a filter, a filter pump connected to draw from the said sump and deliver to the said filter, and a discharge pipe from the said filter delivering in proximity to the circulating pump, all of said elements coacting as specified. I

5. In a lubricator system for internal combustion engines, the combination with the arts of the engine to be lubricated, of a cran case constituting an oil reservoir and receiving the lubricant escaping from such lubricated parts, said reservoir having a low portion to receive the impurities in the oil as they settle, a filter, means to draw oil and the impurities therein from a low level of the reservoir and deliver the same to the filter a conduit for conducting the urified oil from the filter to the reservoir, and means to draw oil from the filter and the reservoir and supply it to the parts of the engine to belubricated 6. In a lubricator system for internal combustion engines, the combination of the parts to be lubricated, of a crank case constituting an oil reservoir and receiving the lubricant escaping from such lubricated parts, said reservolr having a low portion to receive the sedimentary impurities in the oil as they settle, a filter, means to draw oil and the sedimentary impurities therein from a low level of the reservoir and deliver the same to the filter, a conduit for conducting the filtered oil to the reservoir, and means to draw oil from above the said lower portion of the reservoir and supply it to the parts tobc lubricated.

7. In a lubricating system for internal combustion engines, the combination with the parts of the engine to be lubricated, of a crank case constituting a lubricant reservoir receiving the lubricant escaping from such parts lubricated, said crank case being constructed and arranged with means to collect sedimentary impurities which settle to the bottom of the crank case, a filter, and means for automatically withdrawing said sedimentary impurities from said crank case and for returning the filtered lubricant after passing through the filter to the parts to be lubricated.

8. In a lubricating system for internal combustion engines, the combination with the parts of the engine to be lubricated, of a crank case constituting a lubricant reservoir receivin the lubricant escaping from such parts in ricated, said crank case being con structed and arranged with means to collect sedimentary impurities which settle to the bottom of the crank case, a filter, and means for automatically withdrawin said sedimentary impurities from sai crank case and for returning the filtered lubricant after passing through the filter to the crank case.

9. In a lubricating system for internal combustion engines, the combination with the parts of the engine to be lubricated, of a crank case constituting a lubricant reservoir receivin the lubricant escaping from such parts lubricated, said crank case being constructed and arranged with means to collect sedimentary impurities suspended in used lubricant, a filter, means for automatically withdrawing said sedimentary im urities suspended in used lubricant from sai crank case and return the filtered lubricant after passing through the filter to the crank case, and means for withdrawing the lubricant within the crank case above the collected sedimentary impurities and supply it to the parts to be lubricated.

In witness whereof I have hereunto set my hand and seal in the presence of two witnesses. 

